Having Hard Time Doing Manual Request Indexing Your Website Pages?

If your site content isn’t indexed automatically and trying to request indexing in Google Search Console with no luck, then you need to work more on enhancing your site.

If your site relies on manual index submission for normal content, you need to significantly improve your site. Search console does not fix your site, you need to do that yourself.
— 🍌 John 🍌 (@JohnMu) February 3, 2020

John Mueller from Google recommends submitting a sitemap to Google to solve this issue since force indexing will not do you any good.